tree cafdb5b6dd38e93645300c1a9accd6314496120a
parent 8c69e29820860975cd398a42a681c2c6c4787ed8
author Neels Hofmeyr <neels@hofmeyr.de> 1569951850 +0200
committer Neels Hofmeyr <neels@hofmeyr.de> 1570046605 +0200

clear pending requests on MGCP failure

If an MGCP operation on one conn of an endpoint fails, no longer carry out
other pending requests for that endpoint. Only allow pending DLCX to be sent.

If the caller schedules two CRCX at the same time, the first CRCX is sent with
a wildcarded endpoint name like "rtpbridge/*@mgw". Only when the OK for that
returns an allocated endpoint, will the second CRCX be sent, using that actual
allocated endpoint name. But, if the first CRCX fails, then we should not send
another wildcard CRCX, but rather assume both as failed.

Since a failed MGCP message means that the endpoint becomes unusable /
undefined and typically deallocates directly, we can actually discard all other
pending requests except for DLCX.

Change-Id: Icb1d485224bb486b84eff6329f0bd95932e63246